Hello,
It is possible to use Signalink, and wiring is straightforward, but I prefer to use a Rigblaster because I can use the in-line mic to speak after a transmission, as like in SSTV. Rigblaster requires a soundcard and serial cable for PTT, where Signalink (USB) is all integrated with sound/Vox PTT.
Personally, I decided against sending audio down the Remoterig due to latency. When I lived in an apartment close to my house, it was no issue as latency had no effect. But in Puerto Rico, it is a bit of a problem, so I decided to place the Signalink connected directly to the remote radio, and I use Teamviewer and a local computer in the remote station to work digital modes. Works great for me, no latency, perfect audio and lots of fun.
In December, a friend will be installing a Signalink at his remoterig station in Ponce , Puerto Rico to do similar setup as mine.
A picture of my setup can be seen here (Signalink is hidden from view) -
http://kp4tr.org/wp-content/uploads/2011/11/remoterig_carolina_radios.jpgIn this post, I use a Rigblaster to work SSTV via Remoterig. This was when I lived only 6 miles away from my setup in Florida:
http://www.remoterig.com/forum/index.php?topic=549.0